QUICK DEFINITION
Cyber Contagion — The propagation of cyber-related disruption through technical, operational or financial interconnections.
WHY IT MATTERS
Why Cyber Contagion matters in finance
It explains how a localized incident can create downstream effects without every institution being directly compromised.
FINANCIAL SYSTEM CONTEXT
← Back to the Financial Security GlossarySecurity is also a market-infrastructure question
In financial services, cyber contagion should be understood in relation to operational continuity, data integrity, payments, market infrastructure and interconnected dependencies. A control can be technically effective while still leaving material resilience risk if critical services cannot continue or recover during disruption.